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Finding the Third Proportional to 30,362,215 and 66,115,380

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Solution

The third proportional to 30,362,215 and 66,115,380 is: 143,969,847.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,362,215 : 66,115,380 = 66,115,380 : x
  2. Step 2: Convert to fraction form
    30,362,215/66,115,380 = 66,115,380/x
  3. Step 3: Cross multiply
    30,362,215x = 66,115,380 × 66,115,380
  4. Step 4: Simplify right side
    30,362,215x = 4,371,243,472,544,400
  5. Step 5: Solve for x
    x = 4,371,243,472,544,400/30,362,215
  6. Step 6: Final answer
    x = 143,969,847.80

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.